intricate vs simplex

intricate

adj
  • Having a great deal of fine detail or complexity. 

verb
  • To enmesh or entangle: to cause to intricate. 

  • To become enmeshed or entangled. 

simplex

adj
  • Single, simple; not complex. 

  • Unidirectional. 

noun
  • A monomorphemic word, one without affixes. 

  • An analogue in a space of arbitrary dimensionality of the triangle or tetrahedron; the convex hull of n+1 linearly independent points in n-dimensional space; in other words, the triangle, tetrahedron etc., generalized to an arbitrary number of dimensions. 

How often have the words intricate and simplex occurred in a corpus of books? (source: Google Ngram Viewer )